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Attosecond time-energy structure of X-ray free-electron laser pulses

机译:X射线自由电子激光脉冲的attosecond时间能结构

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摘要

The time-energy information of ultrashort X-ray free-electron laser pulses generated by the Linac Coherent Light Source is measured with attosecond resolution via angular streaking of neon 1s photoelectrons. The X-ray pulses promote electrons from the neon core level into an ionization continuum, where they are dressed with the electric field of a circularly polarized infrared laser. This induces characteristic modulations of the resulting photoelectron energy and angular distribution. From these modulations we recover the single-shot attosecond intensity structure and chirp of arbitrary X-ray pulses based on self-amplified spontaneous emission, which have eluded direct measurement so far. We characterize individual attosecond pulses, including their instantaneous frequency, and identify double pulses with well-defined delays and spectral properties, thus paving the way for X-ray pump/X-ray probe attosecond free-electron laser science.
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著录项

  • 来源
    《Nature photonics》 |2018年第4期|共7页
  • 作者单位

    Linac Coherent Light Source SLAC Natl Accelerator Lab Menlo Pk CA USA;

    Deutsch Elektronen Synchrotron DESY Hamburg Germany;

    Tech Univ Munich Phys Dept E11 Garching Germany;

    Tech Univ Munich Phys Dept E11 Garching Germany;

    Linac Coherent Light Source SLAC Natl Accelerator Lab Menlo Pk CA USA;

    Deutsch Elektronen Synchrotron DESY Hamburg Germany;

    Linac Coherent Light Source SLAC Natl Accelerator Lab Menlo Pk CA USA;

    Univ Colorado JILA Boulder CO 80309 USA;

    Stanford Univ PULSE Inst Menlo Pk CA USA;

    Linac Coherent Light Source SLAC Natl Accelerator Lab Menlo Pk CA USA;

    Stanford Univ PULSE Inst Menlo Pk CA USA;

    Linac Coherent Light Source SLAC Natl Accelerator Lab Menlo Pk CA USA;

    Linac Coherent Light Source SLAC Natl Accelerator Lab Menlo Pk CA USA;

    Linac Coherent Light Source SLAC Natl Accelerator Lab Menlo Pk CA USA;

    Linac Coherent Light Source SLAC Natl Accelerator Lab Menlo Pk CA USA;

    Linac Coherent Light Source SLAC Natl Accelerator Lab Menlo Pk CA USA;

    Stanford Univ PULSE Inst Menlo Pk CA USA;

    Linac Coherent Light Source SLAC Natl Accelerator Lab Menlo Pk CA USA;

    Univ Basque Country UPV EHU Dept Fis Mat San Sebastian Spain;

    Stanford Univ PULSE Inst Menlo Pk CA USA;

    Deutsch Elektronen Synchrotron DESY Hamburg Germany;

    Univ Bern Inst Appl Phys Bern Switzerland;

    Tech Univ Munich Phys Dept E11 Garching Germany;

    Linac Coherent Light Source SLAC Natl Accelerator Lab Menlo Pk CA USA;

    Linac Coherent Light Source SLAC Natl Accelerator Lab Menlo Pk CA USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 光学;
  • 关键词

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